Home / 1,918.90-2,647.98-1,132.66

Finding the Fourth Proportional to 1,918.90, 2,647.98 and 1,132.66

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Solution

The fourth proportional to 1,918.90, 2,647.98 and 1,132.66 is: 1,563.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.90 : 2,647.98 = 1,132.66 : x
  2. Step 2: Convert to fraction form
    1,918.90/2,647.98 = 1,132.66/x
  3. Step 3: Cross multiply
    1,918.90x = 2,647.98 × 1,132.66
  4. Step 4: Simplify right side
    1,918.90x = 2,999,261.03
  5. Step 5: Solve for x
    x = 2,999,261.03/1,918.90
  6. Step 6: Final answer
    x = 1,563.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.